The shorts also have expandable waistbands that give an extra few inches to each pair.
If your granting organization requires this, keep all of your receipts together in an expandable file to avoid losing them.
An expandable section offers room for up to two water bottles and an umbrella, and the combination of exterior zipper pockets and interior mesh pockets is practical enough to hold small and large items alike.
If you really want expandable memory on the iPhone, you may have no option but to look to competing devices that have a similar user interface and shape as the iPhone.
Maybe with the third generation, Apple will finally offer expandable memory for iPhone.